Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) OKAMOTO Masahiro,Comparison of Rumination Activities of Dairy Herds Fed Relatively High and Low Concentrate Diet,Nihon Chikusan Gakkaiho,1346907X,Japanese Society of Animal Science,2000,71,1,50-56,https://cir.nii.ac.jp/crid/1390282680173728384,https://doi.org/10.2508/chikusan.71.50